LingoDrop
How the French say "thank you"
IPA /mɛʁsi/Free browser voice. Hear it read by a real native speaker inside the LingoDrop app.
Quick answer: merci is two syllables, mehr-SEE, with the emphasis landing gently on the second one. The vowels are easy. The part that gives English speakers away is the r, made at the back of the throat rather than with the tip of the tongue.
The first syllable, mer, is a short "eh" sound followed by that throaty French r, roughly like the start of the English word "the" but pushed back into your throat. The second syllable, ci, is just a clean "see."
French doesn't punch a stressed syllable the way English does with, say, THANK-you. The stress here is quieter: a small lengthening and a slight rise in pitch on ci, not a hard accent. Say mer softly and let ci land a beat longer and a touch louder, and you're there.
English has one r sound, made by curling the tongue back without touching anything. The r in merci is a completely different sound: a uvular r, produced at the very back of the throat, in roughly the same place you'd gargle water. Carry the American r into merci and every other part of the word can be right while it still sounds foreign to a French ear.
Overcorrecting is just as noticeable. A hard, rolled r (the Spanish or Italian style) isn't standard French either. The real sound sits between the two: a light friction at the back of the throat, not a tap of the tongue and not a trill.
"Merci beaucoup pour ton aide."
"Thank you very much for your help."
Free browser voice. Hear it read by a real native speaker inside the LingoDrop app.
On its own, merci covers most everyday thanks: a cashier handing back your change, someone holding a door, a quick reply to a text. Add beaucoup when you want it to sound like you mean it, after real help or a genuine favor, the way an English speaker reaches for "thank you so much" instead of a flat "thanks."